Checker is defensive against unresolved redirecting constructor

pkg/analyzer/test/src/task/strong/checker_test.dart

Index: pkg/analyzer/test/src/task/strong/checker_test.dart
diff --git a/pkg/analyzer/test/src/task/strong/checker_test.dart b/pkg/analyzer/test/src/task/strong/checker_test.dart
index dc4b9c44121d99c11f5f753a1e3f1056286d6d5a..99e4b70ce385bd26eea53852f5e965fb3cc071a0 100644
--- a/pkg/analyzer/test/src/task/strong/checker_test.dart
+++ b/pkg/analyzer/test/src/task/strong/checker_test.dart
@@ -1105,6 +1105,15 @@ void main() {
       '''
   });
 
+  // This is a regression test for https://github.com/dart-lang/sdk/issues/25071
+  testChecker('unbound redirecting constructor', {
+    '/main.dart': '''
+      class Foo {
+        Foo() : this.init();
+      }
+       '''
+  });
+
   testChecker('redirecting constructor', {
     '/main.dart': '''
           class A {